WO2018027815A1 - 基于非授权频谱的无线通信方法、基站和终端设备 - Google Patents

基于非授权频谱的无线通信方法、基站和终端设备 Download PDF

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Publication number
WO2018027815A1
WO2018027815A1 PCT/CN2016/094701 CN2016094701W WO2018027815A1 WO 2018027815 A1 WO2018027815 A1 WO 2018027815A1 CN 2016094701 W CN2016094701 W CN 2016094701W WO 2018027815 A1 WO2018027815 A1 WO 2018027815A1
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WIPO (PCT)
Prior art keywords
cca
carrier
terminal device
base station
energy detection
Prior art date
Application number
PCT/CN2016/094701
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English (en)
French (fr)
Inventor
杨美英
李�远
官磊
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2016/094701 priority Critical patent/WO2018027815A1/zh
Priority to BR112019002781A priority patent/BR112019002781A2/pt
Priority to EP16912270.2A priority patent/EP3493574B1/en
Priority to CN201680087940.6A priority patent/CN109565697B/zh
Priority to KR1020197005782A priority patent/KR102191898B1/ko
Priority to JP2019507265A priority patent/JP6731540B2/ja
Publication of WO2018027815A1 publication Critical patent/WO2018027815A1/zh
Priority to US16/269,316 priority patent/US20190174501A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0006—Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present invention relates to the field of communication technologies, and, more particularly, to a wireless communication method, a base station, and a terminal device based on an unlicensed spectrum.
  • LTE Long Term Evolution
  • WiFi Wireless Fidelity
  • 3GPP 3rd Generation Partnership Project
  • LBT Listen Before Talk
  • the base station evaluates the carrier by using a Clear Channel Assessment (CCA) with random backoff.
  • CCA Clear Channel Assessment
  • the base station can use the maximum channel occupation time or the maximum carrier occupation time (Maximum Channel).
  • the downlink information is sent to the terminal device by using the carrier in the Occupancy Time (MCOT).
  • MCOT Occupancy Time
  • the base station may share a part of the time in the MCOT to the terminal device, so that the terminal device can detect the carrier in a single-slot CCA, and
  • the uplink information is transmitted on the carrier, so that the terminal device can use the carrier to send uplink information to the base station.
  • only the carrier that the base station operates with CCA with random backoff can be shared and sent to the terminal device to transmit uplink data.
  • the carrier utilization efficiency is limited without considering other types of carriers.
  • the present invention provides a wireless communication method, base station and terminal device based on unlicensed spectrum to better utilize unlicensed spectrum resources for communication.
  • a wireless communication method based on an unlicensed spectrum including: a base station occupies a first carrier on an unlicensed spectrum with a first channel idle evaluation CCA, and the first CCA is a CCA with a random backoff.
  • the base station occupies a second carrier on the unlicensed spectrum with the second CCA, and the second CCA is a single-slot CCA;
  • the base station sends first indication information to the terminal device, where the first indication information is used to indicate
  • the terminal device sends uplink information to the base station on the second carrier; the base station receives the uplink information sent by the terminal device on the second carrier.
  • the base station can only share the carrier occupied by the CCA with random backoff on the unlicensed spectrum to the terminal device, so that the terminal device can send the uplink information to the base station on the carrier.
  • the carrier that is occupied by the base station on the unlicensed spectrum by other CCA operations is not required to be shared with the terminal device, and the utilization efficiency of the unlicensed spectrum is low.
  • the terminal device can also use the carrier to transmit uplink information, thereby improving the utilization of the unlicensed spectrum resource.
  • the first indication information is specifically used to indicate that the terminal device sends the second carrier to the base station in a first maximum carrier occupation time MCOT
  • the uplink information, the first MCOT is a maximum continuous duration that the base station can occupy the first carrier.
  • the first MCOT is performed according to a contention window of the first CCA and/or the base station performs the first CCA The level of the corresponding downlink service is determined.
  • the base station can use the remaining time of the first carrier to send the uplink information to the base station, so that the terminal device can use the first carrier to send the uplink information.
  • the first MCOT is generally larger, so that when the terminal device sends uplink information to the base station on the first carrier in the first MCOT, Sufficient time is beneficial for the terminal device to send uplink information better.
  • the method further includes: the base station to the terminal The device sends the second indication information, where the second indication information is used to indicate the CCA type of the third CCA performed by the terminal device on the second carrier before sending the uplink information, and the CCA type of the third CCA It is a CCA with a random backoff or a single-slot CCA.
  • the base station may determine the CCA type of the third CCA according to the actual situation of the carrier, and directly or indirectly notify the terminal device of the CCA type of the third CCA by using the second indication information.
  • the type of the third CCA can be indicated by the second indication information, so that the terminal device can perform the CCA operation on the first carrier by using the third CCA.
  • the second indication information carries the interval information of the third CCA, and the interval information of the third CCA is used for Indicates the CCA type of the third CCA.
  • the CCA type of the third CCA can be indirectly determined according to the correspondence between the CCA interval and the CCA type by using the interval information of the third CCA in the second indication information.
  • a wireless communication method based on an unlicensed spectrum including: determining, by a terminal device, a first carrier and a second carrier occupied by a base station on an unlicensed spectrum, wherein the base station evaluates the CCA by using the first channel idle. Occupying the first carrier, occupying the second carrier with a second CCA, the first CCA is a CCA with a random backoff, and the second CCA is a single-slot CCA; the terminal device receives the The first indication information of the base station, the first indication information is used to indicate that the terminal device sends uplink information to the base station on the second carrier, and the terminal device is in the second according to the first indication information.
  • the carrier transmits the uplink information to the base station.
  • the terminal device can only share the carrier occupied by the base station with the CCA with random backoff on the unlicensed spectrum, that is, the terminal device can send the uplink information to the base station on the carrier.
  • the prior art does not specify whether the terminal device can share the carrier occupied by the base station on the unlicensed spectrum by other CCA operations, that is, the terminal device can only share a part of the carrier occupied by the base station to send uplink information, and the unlicensed spectrum is utilized. Less efficient.
  • the terminal device by sharing the carrier occupied by the base station in the single-slot CCA to the terminal device, the terminal device can also use the carrier to transmit uplink information, thereby improving the utilization of the unlicensed spectrum resource.
  • the terminal device sends the uplink information to the base station in the second carrier according to the first indication information, including: the terminal device is in the first
  • the maximum carrier occupancy time MCOT is that the second carrier sends the uplink information to the base station, where the first MCOT is a maximum continuous duration that the base station can occupy the first carrier.
  • the first MCOT is performed according to a contention window of the first CCA and/or the base station performs the first CCA The level of the corresponding downlink service is determined.
  • the terminal device is configured according to the first indication information Before the second carrier sends the uplink information to the base station, the method further includes: the terminal device performing a third CCA on the second carrier; and the terminal device according to the first indication information in the The sending, by the carrier, the uplink information to the base station includes: when the third CCA operation is successful, the terminal device sends uplink information to the base station on the first carrier.
  • the method further includes: the terminal device receiving the a second indication information of the base station; the terminal device determines, according to the second indication information, a CCA type of the third CCA, where the CCA type of the third CCA is a CCA with a random backoff or a single slot CCA.
  • the second indication information includes CCA interval information of the third CCA
  • the terminal device determines, according to the second indication information
  • the CCA type of the third CCA includes: determining, by the terminal device, a CCA type of the third CCA according to a CCA interval of the third CCA, and a correspondence between a CCA interval and a candidate CCA type, wherein the candidate The CCA type includes a CCA with a random backoff and a single slot CCA.
  • a third aspect provides a radio communication method based on an unlicensed spectrum, including: determining, by a terminal device, an energy detection threshold of a first carrier on an unlicensed spectrum according to an energy detection threshold of multiple carriers on an unlicensed spectrum; The device performs a first CCA on the first carrier according to an energy detection threshold of the first carrier, where the first CCA is a single-slot CCA; and the terminal device separately performs an energy detection threshold according to the multiple carriers.
  • the plurality of carriers perform a second CCA, and the second CCA is a CCA with a random backoff.
  • the terminal device performs CCA detection on multiple carriers on the unlicensed spectrum (the terminal device performs single-slot CCA for the first carrier and CCA with random backoff for other multiple carriers).
  • the energy detection threshold of the first carrier is set according to the energy detection threshold of multiple carriers, and the energy detection threshold of the first carrier is set by comprehensively considering the energy detection threshold of multiple carriers, which can be more reasonable according to the situation of each carrier.
  • the energy detection threshold of the first carrier is determined.
  • the method further includes: determining, by the terminal device, whether the first carrier is performed according to an operation result of the first CCA and the second CCA And transmitting uplink information on the multiple carriers.
  • the terminal device determines an energy detection threshold of the first carrier on the unlicensed spectrum according to the energy detection threshold of the multiple carriers on the unlicensed spectrum, including: the terminal device according to the multiple carriers
  • the energy detection threshold of the second carrier determines an energy detection threshold of the first carrier, wherein an energy detection threshold of the second carrier is a minimum energy detection threshold of the energy detection thresholds of the multiple carriers.
  • the difficulty of occupying a carrier with a single-slot CCA is greater than the difficulty of occupying a carrier with a CCA with a random backoff, and the smaller the value of the energy detection threshold is, the more difficult it is to occupy the carrier. Therefore, considering the fairness of the occupied carrier, the setting is The energy threshold of the first carrier can be referenced to the minimum energy detection threshold.
  • the terminal device determines, according to an energy detection threshold of the second carrier of the multiple carriers, an energy of the first carrier
  • the detecting threshold includes: determining, by the terminal device, that an energy detection threshold of the first carrier is less than or equal to an energy detection threshold of the second carrier.
  • the energy detection threshold of the first carrier By setting the energy detection threshold of the first carrier to be smaller than the energy detection threshold of the second carrier, the fairness of each carrier occupied by the terminal device is considered, and the unlicensed spectrum resource can be utilized relatively fairly.
  • the terminal device determines an unlicensed spectrum according to an energy detection threshold of multiple carriers on the unlicensed spectrum An energy detection threshold of the first carrier, where the terminal device determines an energy detection threshold of the first carrier according to an energy detection threshold of a third carrier of the multiple carriers, where the third carrier is The carrier with the largest or smallest index number among the plurality of carriers.
  • the energy detection threshold of the carrier with the largest or smallest index number may be randomly selected to determine the energy detection threshold of the first carrier.
  • the terminal device determines an energy of the first carrier according to an energy detection threshold of a third carrier of the multiple carriers
  • the detecting threshold includes: determining, by the terminal device, that an energy detection threshold of the first carrier is less than or equal to an energy detection threshold of the third carrier.
  • setting the energy detection threshold of the first carrier to be smaller than the energy detection threshold of the third carrier takes into account the fairness of each terminal occupied by the terminal device, and can utilize the unlicensed spectrum resource reasonably.
  • the multiple carriers include a fourth carrier and a fifth carrier
  • the fourth The energy detection threshold of the carrier and the fifth carrier is the two carriers with the smallest energy detection threshold in the multiple carriers
  • the energy detection threshold of the first carrier is the energy detection threshold of the fourth carrier and the fifth carrier average value.
  • the energy detection threshold of the first carrier is between an energy detection threshold of the fourth carrier and an energy detection threshold of the fifth carrier, and an energy detection threshold of the first carrier is different from the first
  • the difference between the energy detection threshold of the fourth carrier is a preset threshold, or the difference between the energy detection threshold of the fifth carrier and the energy detection threshold of the first carrier is a preset threshold.
  • the multiple carriers include a sixth carrier and a seventh carrier, where the sixth carrier and the seventh carrier are respectively the carrier with the largest and smallest index numbers among the multiple carriers, and the first The energy detection threshold of the carrier is an average of the energy detection thresholds of the sixth carrier and the seventh carrier.
  • the energy detection threshold of the first carrier is between an energy detection threshold of the sixth carrier and an energy detection threshold of the seventh carrier, and an energy detection threshold of the first carrier is different from the first
  • the difference between the energy detection threshold of the six carriers is a preset threshold, or the difference between the energy detection threshold of the seventh carrier and the energy detection threshold of the first carrier is a preset threshold.
  • the energy detection threshold of the first carrier is an average of energy detection thresholds of the multiple carriers.
  • a base station comprising means for performing the method of the first aspect above.
  • a terminal device comprising means for performing the method of the second aspect above.
  • a terminal device comprising means for performing the method of the above third aspect.
  • a base station comprising a memory, a processor, and a transceiver.
  • the memory is for storing a program
  • the processor is for executing a program
  • the processor executes the method in the first aspect based on the transceiver.
  • a terminal device comprising a memory, a processor, and a transceiver.
  • the memory is for storing a program
  • the processor is for executing a program
  • the processor performs the method of the second aspect based on the transceiver.
  • a terminal device comprising a memory and a processor.
  • the memory stores a program for executing a program, and when the program is executed, the processor executes the method of the third aspect.
  • a computer readable medium storing program code for execution by a base station, the program code comprising instructions for performing the method of the first aspect.
  • a computer readable medium storing program code for execution by a terminal device, the program code comprising instructions for performing the method of the second aspect.
  • a computer readable medium storing program code for execution by a terminal device, the program code comprising instructions for performing the method of the third aspect.
  • FIG. 1 is a schematic flowchart of a wireless communication method based on an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a wireless communication method based on an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of a wireless communication method based on an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • the terminal device in the embodiment of the present invention may also be referred to as a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, and a terminal.
  • the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved Node B (eNB or eNB in LTE).
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved Node B
  • LTE Long Term Evolution
  • the e-NodeB may also be an access point for providing an access service in the 5G, which is not limited by the embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a wireless communication method based on an unlicensed spectrum according to an embodiment of the present invention.
  • the method of Figure 1 includes:
  • the base station occupies the first carrier on the unlicensed spectrum by using the first CCA, where the first CCA is a CCA with a random backoff.
  • the base station uses the second CCA to occupy the second carrier on the unlicensed spectrum, and the second CCA is a single-slot CCA.
  • the base station may simultaneously send downlink information on the first carrier and the second carrier. If the first CCA operation is unsuccessful, the base station cannot transmit downlink information on the second carrier regardless of whether the second CCA operation is successful.
  • the above unlicensed spectrum may be a spectrum outside the LTE licensed spectrum.
  • the unlicensed spectrum may be a spectrum on the 5 GHz band.
  • the base station When performing the first CCA on the first carrier, the base station randomly selects a back-off counter according to a preset contention window value, and then performs a first CCA on the first carrier, and if the channel is idle, the back-off counter is decremented by one. If the channel is not idle, then the value of the backoff counter remains unchanged, and the loop continues until the value of the backoff counter is reduced to zero, at which time the base station can transmit information on the carrier.
  • the base station evaluates the first carrier by using the second CCA before occupying the second carrier. Specifically, if the base station detects that the second carrier is idle, the base station can send information on the second carrier without using a random backoff.
  • the CCA needs to have a rollback process.
  • the value of the slot length of the single-slot CCA may be predefined, may be configured by the base station itself, or may be set according to certain rules. The more common single-slot CCA slot length is 16 microseconds, 25 microseconds.
  • the base station may send downlink information to the terminal device or other devices on the first carrier and the second carrier.
  • the base station when the first CCA operation succeeds, the base station reduces the count value of the backoff counter to 0 when the base station performs CCA on the first carrier, and the base station can occupy the first carrier for a period of time and send a signal on the first carrier. .
  • the second CCA operation succeeds in that the base station can send information on the carrier as long as it detects that the carrier is idle within a certain time slot length range.
  • the first CCA needs to detect that the channel is idle in a plurality of time slots to transmit a signal on the carrier, and the second CCA can transmit a signal on the carrier as long as it detects that the carrier is idle in a certain time slot.
  • the first CCA needs to detect that the channel is idle in a plurality of time slots to transmit a signal on the carrier
  • the second CCA can transmit a signal on the carrier as long as it detects that the carrier is idle in a certain time slot.
  • it is more difficult to occupy the carrier by using the first CCA it is more difficult to occupy the carrier by using the first CCA, and the difficulty of occupying the carrier by using the second CCA is relatively low.
  • the channel when the carrier is detected, if the energy of the channel is detected to be lower than a preset threshold, the channel may be considered to be idle, and no other device occupies the channel. If the energy of the channel is detected to be greater than or equal to a preset threshold, Then, the channel can be considered to be in an idle or busy state, and other devices occupy the channel.
  • the carrier mentioned in the embodiment of the present invention is also a channel, and the carrier and the channel are not distinguished.
  • CCA can be divided into type 4 (category4), type 3 (category3), type 2 (category2), and type 1 (category1).
  • type 4 category4
  • type 3 category3
  • type 2 category2
  • type 1 category1
  • the meanings of various types of CCA are as follows:
  • the node sets a variable length contention window when detecting the carrier, and randomly selects a backoff counter within the contention window range, and backs up the counter when the carrier is idle. The number value is decremented by 1. When the carrier is not idle, the count value of the backoff counter remains unchanged, and the loop continues until the value of the backoff counter is reduced to 0, and the information can be sent on the carrier;
  • the node sets a fixed-length contention window when detecting the carrier, and randomly selects a random back-off device within the contention window range, and the count value of the back-off counter is decremented by 1 when the carrier is idle, when the carrier is not idle.
  • the count value of the backoff counter remains unchanged, and the loop continues until the value of the backoff counter is reduced to 0.
  • the information can be sent on the carrier.
  • the difference between category3 and category4 is that the length of the competition window of category3 is fixed.
  • the node when the node detects the carrier, it can send information directly on the carrier if it detects that the carrier is idle within a fixed time (such as 16 microseconds, 25 microseconds);
  • the node sends information directly on the carrier without listening to the carrier.
  • category4 and category3 are CCAs with random backoff
  • category2 is single slot CCA
  • the single-slot CCA is not limited to the CCA of the above category2, and can be extended to other single-slot CCAs. For example, it is not necessary to detect 25 microseconds at a fixed time, but can detect 25 microseconds multiple times in one time window. As long as the carrier is detected to be idle once, it can be counted as a single-slot CCA success.
  • the base station sends the first indication information to the terminal device, where the first indication information is used to indicate that the terminal device sends the uplink information to the base station on the second carrier.
  • the base station after receiving the first indication information, the base station first performs a third CCA on the second carrier, and when the third CCA operation succeeds, sends the uplink information to the base station in the first carrier.
  • the terminal device after receiving the first indication information, the terminal device sends uplink information to the base station in the second carrier in the first MCOT, where the first MCOT is a maximum continuous duration that the base station can occupy the first carrier.
  • the terminal device may send uplink information on multiple second carriers within the first MCOT.
  • the foregoing first MCOT is determined according to a contention window of the first CCA and/or a level of downlink service corresponding to the base station when the first CCA is performed.
  • the first MCOT corresponds to a parameter of the CCA with a random backoff performed by the base station on the first carrier
  • the parameter may include a competition of the CCA with a random backoff performed by the base station on the first carrier.
  • the window value and at least one of the downlink service levels corresponding to the CCA with the random backoff performed by the base station on the first carrier For example, the larger the contention window value, the more the first MCOT Large, the higher the service level, the smaller the first MCOT.
  • the terminal device may send uplink information to the base station in the second carrier in the first MCOT.
  • the second MCOT of the base station on the second carrier may be equal to the first MCOT. That is, the multiple carriers of the single-slot CCA of the base station and the carrier of the CCA with the random back-off currently have the same MCOT, that is, the first MCOT, and the first MCOT common to the multiple carriers is the base station. Determined by the CCA parameters of the CCA with a random backoff.
  • the terminal device can send uplink information to the base station on the second carrier in the first MCOT or in the second MCOT.
  • the second MCOT here is the maximum continuous duration that the base station can occupy the second carrier. Similar to the first MCOT, the second MCOT may also be determined according to a contention window of the first CCA and/or a level of downlink service corresponding to the base station when performing the second CCA.
  • the terminal device when the terminal device sends the uplink information to the base station on the second carrier in the first MCOT or the second MCOT, the terminal device sends the uplink information in the remaining time except for the time occupied by the base station in the first MCOT or the second MCOT. .
  • the terminal device can occupy the second carrier in the remaining 6 ms, and send uplink information to the base station on the second carrier, or second.
  • the MCOT is 6 ms, and the time when the base station actually occupies the first carrier is 4 ms.
  • the terminal device can occupy the second carrier in the remaining 2 ms time and send the uplink information to the base station on the second carrier.
  • the first MCOT is larger than the second MCOT, because the difficulty of occupying the carrier by using the first CCA is relatively large, but once the carrier is preempted, a long occupation time is allocated, and the second CCA is easily occupied.
  • Carrier the time taken to occupy the carrier is relatively short. Therefore, when the terminal device sends the uplink information to the base station in the first MCOT, the time that the terminal device can occupy the second carrier to send the uplink information becomes longer. Therefore, in the embodiment of the present invention, the terminal device can send uplink information to the base station in the first MCOT or the second MCOT range, which improves the flexibility of the terminal device to use the first carrier to send uplink information.
  • the base station receives uplink information sent by the terminal device on the second carrier.
  • the base station can share the carrier occupied by the single-slot CCA to the terminal device, so that the terminal device can also send the uplink information on the carrier, thereby improving the utilization of the unlicensed spectrum resource.
  • the base station sends the second indication information to the terminal device, where the second indication information is used to indicate the CCA type of the third CCA performed by the terminal device on the second carrier before sending the uplink information, where
  • the type of the third CCA can be a CCA with a random backoff Or single-slot CCA.
  • the foregoing second indication information may directly indicate the type of the CCA, and after receiving the second indication information, the terminal device may directly evaluate the second carrier according to the CCA type indicated by the second indication information.
  • the type of the third CCA performed by the terminal device on the second carrier may be determined by the base station, and the base station may indicate, by using the second indication information, that the terminal device directly evaluates the second carrier by using the single-slot CCA, so that the terminal device can detect the When the two carriers are idle, the second carrier can be used to send uplink information to the base station, so that the terminal device can quickly occupy the second carrier and send uplink information to the base station.
  • the terminal device When the base station indicates, by using the second indication information, that the terminal device evaluates the second carrier by using a CCA with a random backoff, the terminal device relatively increases the difficulty of occupying the second carrier, and only has a random back.
  • the uplink information can be sent on the second carrier if the retired CCA is successfully operated.
  • the second indication information carries the interval information of the third CCA, where the interval information of the third CCA is used to indicate the CCA of the third CCA performed by the terminal device on the second carrier before transmitting the uplink information.
  • the interval information of the third CCA is used to indicate the CCA of the third CCA performed by the terminal device on the second carrier before transmitting the uplink information.
  • the terminal may determine the CCA type of the third CCA according to the CCA interval of the third CCA and the correspondence between the CCA interval and the candidate CCA type, where the type of the candidate CCA includes a random backoff. CCA and single-slot CCA.
  • the CCA interval information of the third CCA in the foregoing second indication information indirectly indicates the type of the CCA, and the terminal device needs to determine the CCA of the third CCA according to the CCA interval indication information after receiving the CCA interval indication information. Type, and then perform a third CCA on the second carrier.
  • the first CCA interval corresponds to a CCA with a random backoff
  • the second CCA interval corresponds to a single slot CCA.
  • the base station shares the transmission opportunity for transmitting the downlink information to the terminal device, so that the terminal device can be used to transmit the uplink information.
  • the uplink and downlink can share the same carrier transmission information, which improves the utilization of carrier resources.
  • the base station performs category 4 on the first carrier (the time for allowing the base station to occupy the first carrier to be the second MCOT), and the category 2 on the second carrier (the time for allowing the base station to occupy the second carrier is the first MCOT), and the base station can be in the first a transmitter that transmits downlink information on the second carrier in the second MCOT
  • the base station can share the use of the uplink information to the terminal device, and the base station can also share the transmission opportunity for transmitting the downlink information on the first carrier to the terminal device to send the uplink information in the first MCOT.
  • the terminal device sends the uplink information to the base station on the second carrier, and the type of the LBT for the first carrier includes the following three situations:
  • the terminal device sends the uplink information to the base station on the second carrier, that is, the base station does not share the second MCOT with the terminal device, but shares the first MCOT with the terminal device, so that The terminal device transmits uplink information on the first carrier within the first MCOT range. For example, if the first MCOT is 8 ms, and the downlink information of the base station is 4 ms, the remaining 4 ms can be used not only for the terminal device to use the category 2 when transmitting the uplink information on the second carrier, but also for the terminal device to transmit on the first carrier.
  • the uplink information uses category4, which means that the MCOT can be shared across carriers.
  • the terminal device sends uplink information to the base station on the second carrier.
  • the base station may determine the priority of the service on the second carrier, and then according to the correspondence between the priority of the service and the MCOT value (generally, each service priority corresponds to an MCOT value, for example, the service priority is more The high MCOT value tends to be smaller) determining the second MCOT value on the first carrier. If the time that the base station sends the downlink information and the terminal device sends the uplink information in the second MCOT, the terminal device can perform the category2 before the terminal device sends the uplink information to the base station on the second carrier, otherwise the terminal device needs to be the category4.
  • the UE can only perform category4 within the first MCOT or within the second MCOT.
  • the unlicensed spectrum-based wireless communication method of the embodiment of the present invention is described in detail with reference to FIG. 1 from the perspective of a base station.
  • the unlicensed spectrum-based wireless communication method according to the embodiment of the present invention is described in detail below with reference to FIG. description.
  • FIG. 2 is a schematic flowchart of a wireless communication method based on an unlicensed spectrum according to an embodiment of the present invention.
  • the method of Figure 2 includes:
  • the terminal device determines a first carrier and a second carrier that are occupied by the base station on the unlicensed spectrum, where the base station occupies the first carrier by using the first channel idle evaluation CCA, and the second carrier is occupied by the second CCA.
  • the first CCA is a CCA with a random backoff
  • the second CCA is a single-slot CCA
  • the terminal device receives the first indication information of the base station, where the first indication information is used to indicate that the terminal device sends the uplink information to the base station on the second carrier.
  • the terminal device sends uplink information to the base station on the second carrier according to the first indication information.
  • the base station can share the carrier occupied by the single-slot CCA to the terminal device, so that the terminal device can also send the uplink information on the carrier, thereby improving the utilization of the unlicensed spectrum resource.
  • the terminal device sends the uplink information to the base station on the second carrier according to the first indication information, where the terminal device is in the first maximum carrier occupation time MCOT.
  • the second carrier sends the uplink information to the base station, where the first MCOT is a maximum continuous duration that the base station can occupy the first carrier.
  • the first MCOT is determined according to a contention window of the first CCA and/or a level of downlink service corresponding to the base station when the first CCA is performed.
  • the method further includes: the terminal device The second carrier performs the third CCA; the terminal device sends the uplink information to the base station according to the first indication information, where the terminal device is: if the third CCA operation is successful, the terminal device Sending uplink information to the base station on the first carrier.
  • the terminal device receives second indication information of the base station; the terminal device determines, according to the second indication information, a CCA type of the third CCA, where the third CCA
  • the CCA type is a CCA with a random backoff or a single slot CCA. .
  • the second indication information includes CCA interval information of the third CCA
  • the terminal device determines, according to the second indication information, a CCA type of the third CCA, including: the terminal Determining, by the device, a CCA type of the third CCA according to a CCA interval of the third CCA, and a correspondence between a CCA interval and a candidate CCA type, where the candidate CCA type includes a CCA with a random backoff and a single slot CCA.
  • the unlicensed spectrum-based wireless communication method is described in detail above with reference to FIG. 1 and FIG. 2 respectively.
  • the terminal device transmits uplink information to the carrier occupied by the shared base station
  • the terminal first performs CCA detection on the carrier.
  • CCA detection on a carrier
  • the energy of the signal on the carrier can be judged, and when the signal energy is below a certain threshold, the carrier is considered to be in an idle state. Therefore, how to set the energy detection threshold when the CCA detects the terminal device when sharing the carrier occupied by the base station is a problem to be considered.
  • the base station performs CCA detection on multiple carriers, and the first carrier is used
  • the CCA with random backoff is used for the detection, and the energy detection threshold when detecting the first carrier is the first energy detection threshold, and then the energy detection threshold of the base station when performing CCA detection on the remaining carriers is also set.
  • the first energy detection threshold that is, the energy detection threshold when detecting the first carrier is consistent.
  • this method lacks flexibility, does not comprehensively consider the performance of multiple carriers, and does not specify the energy threshold for the CCA detection of the carrier before transmitting the uplink information. Therefore, a new method is needed to determine that the terminal device is sharing. How to determine the energy detection threshold of the CCA for the carrier before the carrier occupied by the base station and transmitting the uplink information.
  • the wireless communication method based on the unlicensed spectrum according to the embodiment of the present invention will be described in detail below with reference to FIG.
  • FIG. 3 is a schematic flowchart of a wireless communication method based on an unlicensed spectrum according to an embodiment of the present invention.
  • the method of Figure 3 includes:
  • the terminal device determines, according to an energy detection threshold of multiple carriers on the unlicensed spectrum, an energy detection threshold of the first carrier on the unlicensed spectrum.
  • the terminal device performs a first CCA on the first carrier according to an energy detection threshold of the first carrier, where the first CCA is a single-slot CCA.
  • the terminal device performs a second CCA on the multiple carriers according to the energy detection thresholds of the multiple carriers, where the second CCA is a CCA with a random backoff.
  • the first carrier and the multiple carriers may be carriers that are occupied by the base station after performing CCA and the CCA is successful, and the base station shares the first carrier with the terminal device, so that the terminal device can send uplink information on the first carrier.
  • the energy detection thresholds of the CCAs of the plurality of carriers may be the same or different. For example, if there are three carriers, the energy detection thresholds for performing CCA on the three carriers may be three different values. It can also be other values.
  • the energy detection threshold of the terminal device integrating multiple carriers can be more reasonable.
  • the energy detection threshold of the carrier for single-slot CCA operation is determined.
  • the terminal device determines, according to an operation result of the first CCA and the second CCA, whether to send uplink information on the first carrier and the multiple carriers.
  • the terminal device may send uplink information on the first carrier and the multiple carriers.
  • the terminal device may only send uplink information on the first carrier.
  • the terminal device determines an energy detection threshold of the first carrier according to an energy detection threshold of a second carrier of the multiple carriers, where an energy detection threshold of the second carrier Is the smallest energy detection threshold of the energy detection thresholds of the multiple carriers.
  • the difficulty of occupying a carrier with a single-slot CCA is greater than the difficulty of occupying a carrier with a CCA with a random backoff, and the smaller the value of the energy detection threshold is, the more difficult it is to occupy the carrier. Therefore, considering the fairness of occupying the carrier, The minimum energy detection threshold can be referenced when setting the energy detection threshold of the first carrier.
  • the energy detection threshold of the first carrier is less than or equal to the energy detection threshold of the second carrier.
  • the energy detection threshold of the first carrier may be smaller than the energy detection threshold of the second carrier, and the energy of the second carrier
  • the difference between the detection threshold and the energy detection threshold of the first carrier is a preset first difference.
  • the terminal device determines an energy detection threshold of the first carrier according to an energy detection threshold of a third carrier of the multiple carriers, where the third carrier is the multiple The carrier with the largest or smallest index number among the carriers.
  • the first carrier energy detection threshold is less than or equal to the energy detection threshold of the third carrier.
  • the energy detection threshold of the first carrier may be smaller than the energy detection threshold of the third carrier, and the energy of the third carrier
  • the difference between the detection threshold and the energy detection threshold of the first carrier is a preset third difference.
  • the terminal device determines an average value of the energy detection thresholds of the multiple carriers as an energy detection threshold of the first carrier.
  • multiple carriers include 10 carriers
  • two carriers can be arbitrarily selected, and an average value of energy detection thresholds of the two carriers is set as an energy detection threshold of the first carrier.
  • the average value of the energy detection thresholds of three or more carriers may also be set as the energy detection threshold of the first carrier.
  • two carriers may be arbitrarily selected from multiple carriers, and an energy detection threshold of the first carrier is set between the energy detection thresholds of the two carriers.
  • the wireless communication method based on the unlicensed spectrum according to the embodiment of the present invention is described in detail above with reference to FIG. 1 to FIG. 3, and the base station and the terminal according to the embodiment of the present invention will be described below with reference to FIG. 4 to FIG. device.
  • the base station and the terminal device described in FIG. 4 to FIG. 9 can implement the steps of the unlicensed spectrum-based wireless communication method in the embodiment of the present invention in FIG. 1 to FIG. 3, and the repeated description is omitted as appropriate for brevity.
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 400 of Figure 4 includes:
  • the processing module 410 is configured to occupy the first carrier on the unlicensed spectrum by using the first channel idle evaluation CCA, where the first CCA is a CCA with a random backoff;
  • the processing module 410 is further configured to occupy a second carrier on the unlicensed spectrum by using the second CCA, where the second CCA is a single-slot CCA;
  • the sending module 420 is configured to send the first indication information to the terminal device, where the first indication information is used to indicate that the terminal device sends uplink information to the base station on the second carrier;
  • the receiving module 430 is configured to receive, by using the second carrier, the uplink information sent by the terminal device.
  • the base station can share the carrier occupied by the single-slot CCA to the terminal device, so that the terminal device can also send the uplink information on the carrier, thereby improving the utilization of the unlicensed spectrum resource.
  • the first indication information is specifically used to indicate that the terminal device sends the uplink information to the base station in the second carrier within a first maximum carrier occupation time MCOT, where the An MCOT is a maximum continuous duration that the base station can occupy the first carrier.
  • the first MCOT is determined according to a contention window of the first CCA and/or a level of downlink service corresponding to the base station when the first CCA is performed.
  • the sending module 420 is further configured to send the second indication information to the terminal device, where the second indication information is used to indicate that the terminal device is in front of sending the uplink information.
  • the CCA type of the third CCA performed by the second carrier, and the CCA type of the third CCA is a CCA with a random backoff or a single-slot CCA.
  • the second indication information carries interval information of the third CCA, and the interval information of the third CCA is used to indicate a CCA type of the third CCA.
  • the base station 400 in FIG. 4 can perform the various steps performed by the base station in the unlicensed spectrum based wireless communication method illustrated in FIG.
  • FIG. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • Terminal device 500 of FIG. include:
  • the determining module 510 is configured to determine a first carrier and a second carrier that are occupied by the base station on the unlicensed spectrum, where the base station occupies the first carrier by using the first channel idle evaluation CCA, and the second CCA occupies the first carrier a second carrier, the first CCA is a CCA with a random backoff, and the second CCA is a single-slot CCA;
  • the receiving module 520 is configured to receive first indication information of the base station, where the first indication information is used to indicate that the terminal device sends uplink information to the base station on the second carrier;
  • the sending module 530 is configured to send the uplink information to the base station on the second carrier according to the first indication information.
  • the base station can share the carrier occupied by the single-slot CCA to the terminal device, so that the terminal device can also send the uplink information on the carrier, thereby improving the utilization of the unlicensed spectrum resource.
  • the sending module 530 is specifically configured to send the uplink information to the base station in the second carrier within a first maximum carrier occupation time MCOT, where the first MCOT is The base station can occupy a maximum continuous duration of the first carrier.
  • the first MCOT is determined according to a contention window of the first CCA and/or a level of downlink service corresponding to the base station when the first CCA is performed.
  • the terminal device further includes: a detecting module 540, configured to perform a third CCA on the second carrier; and the sending module 530 is specifically configured to be successful in the third CCA operation.
  • the second carrier transmits uplink information to the base station.
  • the receiving module 520 is further configured to receive the second indication information of the base station, where the determining module 510 is further configured to determine, according to the second indication information, a CCA of the third CCA.
  • Type, the CCA type of the third CCA is a CCA with a random backoff or a single slot CCA.
  • the second indication information includes CCA interval information of the third CCA
  • the determining module 510 is specifically configured to: according to the CCA interval of the third CCA, and the CCA interval and the candidate CCA type. The correspondence determines a CCA type of the third CCA, wherein the candidate CCA type includes a CCA with a random backoff and a single slot CCA.
  • terminal device 500 in FIG. 5 can perform the various steps performed by the terminal device in the unlicensed spectrum-based wireless communication method illustrated in FIG. 2.
  • FIG. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • Terminal device 600 of FIG. include:
  • a determining module 610 configured to determine, according to an energy detection threshold of multiple carriers on the unlicensed spectrum, an energy detection threshold of the first carrier on the unlicensed spectrum;
  • the detecting module 620 is configured to perform a first CCA on the first carrier according to an energy detection threshold of the first carrier, where the first CCA is a single-slot CCA.
  • the detecting module 620 is further configured to perform a second CCA on the multiple carriers according to an energy detection threshold of the multiple carriers, where the second CCA is a CCA with a random backoff.
  • the energy detection threshold of the terminal device integrating multiple carriers can be more reasonable.
  • the energy detection threshold of the carrier for single-slot CCA operation is determined.
  • the determining module 610 is further configured to: determine, according to an operation result of the first CCA and the second CCA, whether to send uplink on the first carrier and the multiple carriers. information.
  • the determining module 610 is specifically configured to: determine an energy detection threshold of the first carrier according to an energy detection threshold of a second carrier of the multiple carriers, where the second The energy detection threshold of the carrier is the smallest energy detection threshold of the energy detection thresholds of the plurality of carriers.
  • the determining module 610 is specifically configured to: determine that an energy detection threshold of the first carrier is less than or equal to an energy detection threshold of the second carrier.
  • the determining module 610 is specifically configured to: determine an energy detection threshold of the first carrier according to an energy detection threshold of a third carrier of the multiple carriers, where the third The carrier is a carrier with the largest or smallest index number among the plurality of carriers.
  • the determining module 610 is specifically configured to: determine that an energy detection threshold of the first carrier is less than or equal to an energy detection threshold of the third carrier.
  • terminal device 600 in FIG. 6 can perform the various steps performed by the terminal device in the unlicensed spectrum-based wireless communication method illustrated in FIG.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
  • the base station 700 of Figure 7 includes:
  • a memory 710 configured to store a program
  • a processor 720 configured to execute a program in the memory 710, when the program is executed, the processor 720 is configured to occupy a first carrier on an unlicensed spectrum by using a first channel idle evaluation CCA, where A CCA is a CCA with a random backoff;
  • the processor 720 is further configured to occupy a second carrier on the unlicensed spectrum by using the second CCA, where the second CCA is a single-slot CCA;
  • the transceiver 730 is configured to send the first indication information to the terminal device, where the first indication information is used to indicate that the terminal device sends uplink information to the base station on the second carrier;
  • the transceiver 730 is further configured to receive, by using the second carrier, the uplink information sent by the terminal device.
  • the base station can share the carrier occupied by the single-slot CCA to the terminal device, so that the terminal device can also send the uplink information on the carrier, thereby improving the utilization of the unlicensed spectrum resource.
  • the first indication information is specifically used to indicate that the terminal device sends the uplink information to the base station in the second carrier within a first maximum carrier occupation time MCOT, where the An MCOT is a maximum continuous duration that the base station can occupy the first carrier.
  • the first MCOT is determined according to a contention window of the first CCA and/or a level of downlink service corresponding to the base station when the first CCA is performed.
  • the processor 720 is further configured to send the second indication information to the terminal device, where the second indication information is used to indicate that the terminal device is in front of sending the uplink information.
  • the CCA type of the third CCA performed by the second carrier, and the CCA type of the third CCA is a CCA with a random backoff or a single-slot CCA.
  • the second indication information carries interval information of the third CCA, and the interval information of the third CCA is used to indicate a CCA type of the third CCA.
  • the base station 700 in FIG. 7 can perform the various steps performed by the base station in the unlicensed spectrum based wireless communication method illustrated in FIG.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device 800 of FIG. 8 includes:
  • a memory 810 configured to store a program
  • a processor 820 configured to execute a program in the memory 810, when the program is executed, the processor 820 is configured to determine a first carrier and a second carrier occupied by the base station on an unlicensed spectrum, where The base station occupies the first carrier with the first channel idle evaluation CCA, and the second carrier with the second CCA, the first CCA is a CCA with a random backoff, and the second CCA is a single slot.
  • CCA
  • the transceiver 830 is configured to receive first indication information of the base station, where the first indication information is used to indicate that the terminal device sends uplink information to the base station on the second carrier.
  • the transceiver 830 is further configured to send the uplink information to the base station on the second carrier according to the first indication information.
  • the base station can share the carrier occupied by the single-slot CCA to the terminal device, so that the terminal device can also send the uplink information on the carrier, thereby improving the utilization of the unlicensed spectrum resource.
  • the transceiver 830 is specifically configured to send the uplink information to the base station in the second carrier within a first maximum carrier occupation time MCOT, where the first MCOT is The base station can occupy a maximum continuous duration of the first carrier.
  • the first MCOT is determined according to a contention window of the first CCA and/or a level of downlink service corresponding to the base station when the first CCA is performed.
  • the processor 820 is configured to perform a third CCA on the second carrier, where the transceiver 830 is specifically configured to be used in the case that the third CCA operation is successful.
  • the second carrier sends uplink information to the base station.
  • the transceiver 830 is further configured to receive second indication information of the base station, where the processor 820 is further configured to determine, according to the second indication information, a CCA of the third CCA.
  • Type, the CCA type of the third CCA is a CCA with a random backoff or a single slot CCA.
  • the second indication information includes CCA interval information of the third CCA
  • the processor 820 is specifically configured to: according to the CCA interval of the third CCA, and the CCA interval and the candidate CCA type.
  • the correspondence determines a CCA type of the third CCA, wherein the candidate CCA type includes a CCA with a random backoff and a single slot CCA.
  • terminal device 800 in FIG. 8 can perform the various steps performed by the terminal device in the unlicensed spectrum-based wireless communication method shown in FIG. 2.
  • FIG. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • the terminal device 900 of FIG. 9 includes:
  • a memory 910 configured to store a program
  • a processor 920 configured to execute a program in the memory 910, when the program is executed, the processor 920 is configured to determine, according to an energy detection threshold of multiple carriers on an unlicensed spectrum, an unlicensed spectrum Energy detection threshold of a carrier;
  • the processor 920 is further configured to perform a first CCA on the first carrier according to an energy detection threshold of the first carrier, where the first CCA is a single-slot CCA.
  • the processor 920 is further configured to perform a second CCA on the multiple carriers according to an energy detection threshold of the multiple carriers, where the second CCA is a CCA with a random backoff.
  • the energy detection threshold of the terminal device integrating multiple carriers can be more reasonable.
  • the energy detection threshold of the carrier for single-slot CCA operation is determined.
  • the processor 920 is further configured to: determine, according to an operation result of the first CCA and the second CCA, whether to send uplink on the first carrier and the multiple carriers information.
  • the processor 920 is specifically configured to: determine an energy detection threshold of the first carrier according to an energy detection threshold of a second carrier of the multiple carriers, where the second The energy detection threshold of the carrier is the smallest energy detection threshold of the energy detection thresholds of the plurality of carriers.
  • the processor 920 is specifically configured to: determine that an energy detection threshold of the first carrier is less than or equal to an energy detection threshold of the second carrier.
  • the processor 920 is specifically configured to: determine an energy detection threshold of the first carrier according to an energy detection threshold of a third carrier of the multiple carriers, where the third The carrier is a carrier with the largest or smallest index number among the plurality of carriers.
  • the processor 920 is specifically configured to: determine that an energy detection threshold of the first carrier is less than or equal to an energy detection threshold of the third carrier.
  • the terminal device 900 in FIG. 9 can perform the various steps performed by the terminal device in the unlicensed spectrum-based wireless communication method illustrated in FIG.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

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Abstract

本发明实施例提供了一种基于非授权频谱的无线通信方法，基站和终端设备。该方法包括基站以第一信道空闲评测CCA占用非授权频谱上的第一载波，第一CCA为单时隙CCA；基站向终端设备发送第一指示信息，第一指示信息用于指示终端设备在第一载波向基站发送上行信息；基站在第一载波接收终端设备发送的上行信息。本发明实施例能提供非授权频谱资源的利用率。

Description

基于非授权频谱的无线通信方法、基站和终端设备 技术领域
本发明涉及通信技术领域，并且更具体地，涉及一种基于非授权频谱的无线通信方法、基站和终端设备。
背景技术
在非授权频段上为了让长期演进系统(Long Term Evolution，LTE)设备和无线保真(Wireless Fidelity，WiFi)公平的竞争资源，第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)在LTE辅助接入(LTE Assisted Access，LAA)技术中引入了先听后说(Listen Before Talk，LBT)机制，用于LTE设备在非授权频段上监听和检测空闲信道。
在现有技术中，基站以带有随机回退的空闲信道评测(Clear Channel Assessment，CCA)对载波进行评测，当CCA操作成功时，基站可以在最大信道占用时间或者最大载波占用时间(Maximum Channel Occupancy Time，MCOT)内通过该载波向终端设备发送下行信息，此外，基站还可以把该MCOT中的一部分时间共享给终端设备，使得终端设备能够以单时隙CCA对载波进行检测，并在该载波上进行上行信息的传输，使得终端设备能够利用该载波向基站发送上行信息。现有技术中仅仅给出了基站以带有随机回退的CCA操作的载波可以共享给终端设备发送上行数据，没有考虑到其它类型的载波，载波的利用效率有限。
发明内容
本发明提供了一种基于非授权频谱的无线通信方法、基站和终端设备，以更好地利用非授权频谱资源进行通信。
第一方面，提供了一种基于非授权频谱的无线通信方法，包括：基站以第一信道空闲评测CCA占用非授权频谱上的第一载波，所述第一CCA为带有随机回退的CCA；所述基站以第二CCA占用非授权频谱上的第二载波，所述第二CCA为单时隙CCA；所述基站向终端设备发送第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；所述基站在所述第二载波接收所述终端设备发送的所述上行信息。
在现有技术中，基站仅可以将以带有随机回退的CCA在非授权频谱上占用的载波共享给终端设备，使得终端设备能在该载波上向基站发送上行信息。而并未规定基站以其它CCA操作在非授权频谱上占用的载波共享给终端设备，非授权频谱的利用效率较低。而在本发明中，通过将基站以单时隙CCA占用的载波共享给终端设备，使得终端设备也能够利用该载波传输上行信息，提高了非授权频谱资源的利用率。
结合第一方面，在第一方面的第一种实现方式中，所述第一指示信息具体用于指示所述终端设备在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
结合第一方面的第一种实现方式，在第一方面的第二种实现方式中，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
终端设备在第一MCOT内向基站发送上行信息时可以利用基站占用第一载波的剩余时间向基站发送上行信息，便于终端设备利用第一载波发送上行信息。
一般来说，由于基站以第一CCA占用第一载波的难度相对较大，因此第一MCOT一般较大，这样当终端设备在第一MCOT内在第一载波上向基站发送上行信息时能够有更充分的时间，有利于终端设备更好地发送上行信息。
结合第一方面，以及第一方面的第一种和第二种实现方式中的任意一种，在第一方面的第三种实现方式中，所述方法还包括：所述基站向所述终端设备发送第二指示信息，所述第二指示信息用于指示所述终端设备在发送所述上行信息之前对所述第二载波进行的第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
基站可以根据载波的实际情况确定第三CCA的CCA类型，并且通过第二指示信息直接或者间接通知终端设备第三CCA的CCA类型。
通过第二指示信息能够指示第三CCA的类型，便于终端设备以第三CCA对第一载波进行CCA操作。
结合第一方面的第三种实现方式，在第一方面的第四种实现方式中，所述第二指示信息携带第三CCA的间隔信息，所述第三CCA的间隔信息用于 指示所述第三CCA的CCA类型。
通过第二指示信息中的第三CCA的间隔信息，能够根据CCA间隔与CCA类型的对应关系间接的确定第三CCA的CCA类型。
第二方面，提供了一种基于非授权频谱的无线通信方法，包括：终端设备确定基站在非授权频谱上占用的第一载波和第二载波，其中，所述基站以第一信道空闲评测CCA占用所述第一载波，以第二CCA占用所述第二载波，所述第一CCA为带有随机回退的CCA，所述第二CCA为单时隙CCA；所述终端设备接收所述基站的第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；所述终端设备根据所述第一指示信息在所述第二载波向所述基站发送所述上行信息。
在现有技术中，终端设备只能够共享基站以带有随机回退的CCA在非授权频谱上占用的载波，也就是说终端设备可以在该载波上向基站发送上行信息。但是现有技术中并未规定终端设备是否可以共享基站以其它CCA操作在非授权频谱上占用的载波，也就是说终端设备只能共享基站占用的一部分载波来发送上行信息，非授权频谱的利用效率较低。而在本发明中，通过将基站以单时隙CCA占用的载波共享给终端设备，使得终端设备也能够利用该载波传输上行信息，提高了非授权频谱资源的利用率。
结合第二方面，在第二方面的第一种实现方式中，所述终端设备根据所述第一指示信息在所述第二载波向所述基站发送上行信息，包括：所述终端设备在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，其中，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
结合第二方面的第一种实现方式，在第二方面的第二种实现方式中，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
结合第二方面，以及第二方面的第一种和第二种实现方式中的任意一种，在第二方面的第三种实现方式中，所述终端设备在根据所述第一指示信息在所述第二载波向所述基站发送上行信息之前，所述方法还包括：所述终端设备对所述第二载波进行第三CCA；所述终端设备根据所述第一指示信息在所述第一载波向所述基站发送上行信息，包括：在所述第三CCA操作成功的情况下，所述终端设备在所述第一载波向所述基站发送上行信息。
结合第二方面，以及第二方面的第一种至第三种实现方式中的任意一种，在第二方面的第四种实现方式中，所述方法还包括：所述终端设备接收所述基站的第二指示信息；所述终端设备根据所述第二指示信息确定所述第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
结合第二方面的第四种实现方式，在第二方面的第五种实现方式中，所述第二指示信息包含第三CCA的CCA间隔信息，所述终端设备根据所述第二指示信息确定所述第三CCA的CCA类型，包括：所述终端设备根据所述第三CCA的CCA间隔，以及CCA间隔与候选CCA类型的对应关系确定所述第三CCA的CCA类型，其中，所述候选CCA类型包括带有随机回退的CCA以及单时隙CCA。
第三方面，提供一种基于非授权频谱的无线通信方法，包括：终端设备根据非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限；所述终端设备根据所述第一载波的能量检测门限对所述第一载波进行第一CCA，所述第一CCA为单时隙CCA；所述终端设备根据所述多个载波的能量检测门限分别对所述多个载波进行第二CCA，所述第二CCA为带有随机回退的CCA。
在现有技术中，基站在对非授权频谱上的多个载波进行CCA检测时(其中基站对第一载波是做带有随机回退的CCA，对其它载波是做单时隙CCA)，是将其它载波的能量检测门限值设置为与第一载波的能量检测门限值相同。这种方式中，其它载波的能量检测门限都要与第一载波的能量检测门限保持一致，缺乏灵活性。而在本发明中，终端设备在对非授权频谱上的多个载波进行CCA检测时(终端设备对第一载波做单时隙CCA，对其它的多个载波做带有随机回退的CCA)，是根据多个载波的能量检测门限来设置第一载波的能量检测门限，是综合考虑了多个载波的能量检测门限来设置第一载波的能量检测门限，能够根据各个载波的情况，更合理的确定第一载波的能量检测门限。
结合第三方面，在第三方面的第一种实现方式中，所述方法还包括：所述终端设备根据所述第一CCA和所述第二CCA的操作结果确定是否在所述第一载波和所述多个载波上发送上行信息。
结合第三方面或者第三方面的第一种实现方式，在第三方面的第二种实 现方式中，所述终端设备根据所述非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限，包括：所述终端设备根据所述多个载波中的第二载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第二载波的能量检测门限是所述多个载波的能量检测门限中最小的能量检测门限。
由于以单时隙CCA占用载波的难度大于带有随机回退的CCA占用载波的难度，而能量检测门限的值越小占用载波的难度就越大，因此考虑到占用载波的公平性，在设置第一载波的能量检测门限时可以参照最小的能量检测门限。
结合第三方面的第二种实现方式，在第三方面的第三种实现方式中，所述终端设备根据所述多个载波中的第二载波的能量检测门限确定所述第一载波的能量检测门限，包括：所述终端设备确定所述第一载波的能量检测门限小于或者等于所述第二载波的能量检测门限。
通过将第一载波的能量检测门限设置为小于第二载波的能量检测门限考虑到了终端设备占用各个载波的公平性，能够相对公平地利用非授权频谱资源。
结合第三方面或者第三方面的第一种实现方式，在第三方面的第四种实现方式中，所述终端设备根据所述非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限，包括：所述终端设备根据所述多个载波中的第三载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第三载波为所述多个载波中索引号最大或者最小的载波。
在设置第一载波的能量检测门限时，为了方便，也可以随机选择索引号最大或者最小的载波的能量检测门限来确定第一载波的能量检测门限。
结合第三方面的第四种实现方式，在第三方面的第五种实现方式中，所述终端设备根据所述多个载波中的第三载波的能量检测门限确定所述第一载波的能量检测门限，包括：所述终端设备确定所述第一载波的能量检测门限小于或者等于所述第三载波的能量检测门限。
一般来说，将第一载波的能量检测门限设置为小于第三载波的能量检测门限考虑到了终端设备占用各个载波的公平性，能够较合理地利用非授权频谱资源。
在某些实现方式中，所述多个载波包含第四载波和第五载波，所述第四 载波和第五载波的能量检测门限在所述多个载波中能量检测门限值最小的两个载波，所述第一载波的能量检测门限为所述第四载波和第五载波的能量检测门限的平均值。
在某些实现方式中，所述第一载波的能量检测门限在第四载波的能量检测门限和第五载波的能量检测门限之间，并且，所述第一载波的能量检测门限与所述第四载波的能量检测门限的差值为预设阈值，或者，所述第五载波的能量检测门限与所述第一载波的能量检测门限的差值为预设阈值。
在某些实现方式中，所述多个载波包含第六载波和第七载波，所述第六载波和第七载波分别是所述多个载波中索引号最大和最小的载波，所述第一载波的能量检测门限为所述第六载波和第七载波的能量检测门限的平均值。
在某些实现方式中，所述第一载波的能量检测门限在第六载波的能量检测门限和第七载波的能量检测门限之间，并且，所述第一载波的能量检测门限与所述第六载波的能量检测门限的差值为预设阈值，或者，所述第七载波的能量检测门限与所述第一载波的能量检测门限的差值为预设阈值。
在某些实现方式中，所述第一载波的能量检测门限为所述多个载波的能量检测门限的平均值。
第四方面，提供一种基站，所述基站包括用于执行上述第一方面的方法的模块。
第五方面，提供一种终端设备，所述终端设备包括用于执行上述第二方面的方法的模块。
第六方面，提供一种终端设备，所述终端设备包括用于执行上述第三方面的方法的模块。
第七方面，提供一种基站，所述基站包括存储器、处理器和收发器。所述存储器用于存储程序，所述处理器用于执行程序，当所述程序被执行时，所述处理器基于所述收发器执行所述第一方面中的方法。
第八方面，提供一种终端设备，所述终端设备包括存储器、处理器和收发器。所述存储器用于存储程序，所述处理器用于执行程序，当所述程序被执行时，所述处理器基于所述收发器执行所述第二方面中的方法。
第九方面，提供一种终端设备，所述终端设备包括存储器、处理器。所述存储器存储程序，所述处理器用于执行程序，当所述程序被执行时，所述处理器执行所述第三方面中的方法。
第十方面，提供一种计算机可读介质，所述计算机可读介质存储用于基站执行的程序代码，所述程序代码包括用于执行所述第一方面中的方法的指令。
第十一方面，提供一种计算机可读介质，所述计算机可读介质存储用于终端设备执行的程序代码，所述程序代码包括用于执行所述第二方面中的方法的指令。
第十二方面，提供一种计算机可读介质，所述计算机可读介质存储用于终端设备执行的程序代码，所述程序代码包括用于执行所述第三方面中的方法的指令。
为了更清楚地说明本发明实施例的技术方案，下面将对本发明实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例的基于非授权频谱的无线通信方法的示意性流程图。
图2是本发明实施例的基于非授权频谱的无线通信方法的示意性流程图。
图3是本发明实施例的基于非授权频谱的无线通信方法的示意性流程图。
图4是本发明实施例的基站的示意性结构图。
图5是本发明实施例的终端设备的示意性结构图。
图6是本发明实施例的终端设备的示意性结构图。
图7是本发明实施例的基站的示意性结构图。
图8是本发明实施例的终端设备的示意性结构图。
图9是本发明实施例的终端设备的示意性结构图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创 造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
应理解，本发明的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、5G等。
本发明实施例中的终端设备也可以指用户设备(User Equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，PLMN)中的终端设备等，本发明实施例并不限定。
本发明实施例中，基站可以是GSM或CDMA中的基站(Base Transceiver Station，BTS)，也可以是WCDMA中的基站(NodeB)，还可以是LTE中的演进型基站(evolved Node B，eNB或e-NodeB)，还可以是5G中的用于提供接入服务的接入点，本发明实施例并不限定。
图1是本发明实施例的基于非授权频谱的无线通信方法的示意性流程图。图1的方法包括：
110、基站以第一CCA占用非授权频谱上的第一载波，其中，第一CCA为带有随机回退的CCA。
120、基站以第二CCA占用非授权频谱上的第二载波，第二CCA为单时隙CCA。
应理解，在本发明实施例中，在第一CCA和第二CCA均操作成功的情况下，基站可以在第一载波和第二载波同时发送下行信息。如果第一CCA操作不成功，那么无论第二CCA操作是否成功基站都不能在第二载波发送下行信息。
上述非授权频谱可以是LTE授权频谱之外的频谱，例如，非授权频谱可以是5GHz频段上的频谱。
基站在对第一载波进行第一CCA时，是根据一个预设的竞争窗口值随机选择一个回退计数器，然后对第一载波进行第一CCA，如果信道空闲，则回退计数器减1，如果信道不空闲，那么回退计数器的数值保持不变，如此循环下去，直到回退计数器的数值减到0，这时基站才可以在该载波上发送信息。
基站在占用第二载波之前，以第二CCA对第一载波进行评测，具体来说，只要基站侦测到第二载波空闲就可以在第二载波上发送信息，而不用像带有随机回退的CCA需要有回退的过程。另外，单时隙CCA的时隙长度的取值可以是预定义的，可以是基站自身配置的，也可以根据一定的规则来设定。较为常见的单时隙CCA的时隙长度为16微秒、25微秒。
可选地，在第一CCA和第二CCA操作成功的情况下，基站可以在第一载波和第二载波向上述终端设备或者其他的设备发送下行信息。
应理解，在这里，第一CCA操作成功是指基站在对第一载波进行CCA时，回退计数器的计数数值减到0，基站可以占用第一载波一段时间，并在第一载波上发送信号。而第二CCA操作成功是指基站只要在某个时隙长度范围内侦听到载波空闲，就可以在该载波上发送信息。
应理解，第一CCA需要在多个时隙内检测到信道空闲才能在载波上发送信号，而第二CCA只要在某个时隙内检测到载波空闲就可以在该载波上发送信号，因此，对于同一个载波来说，采用第一CCA占用载波的难度较大，而采用第二CCA占用载波的难度相对较低。
应理解，当对载波进行检测时，如果检测到信道的能量低于预设阈值，那么就可以认为信道空闲，此时没有其它的设备占用信道，如果检测到信道的能量大于或者等于预设阈值，那么就可以认为信道处于不空闲或者忙碌状态，此时有其它的设备占用该信道。
应理解，本发明实施例中提到的载波也就是信道，载波和信道不做区分。
CCA的类型具体可以分为类型4(category4)、类型3(category3)、类型2(category2)和类型1(category1)，各种类型的CCA的含义具体如下：
category4，节点在对载波进行检测时设置一个可变长度的竞争窗口，并在竞争窗口范围内随机选择一个回退计数器，当载波空闲时回退计数器的计 数数值减1，当载波不空闲时回退计数器的计数数值保持不变，一直循环下去，直到回退计数器的数值减为0节点才可以在该载波上发送信息；
category3，节点在对载波进行检测时设置一个固定长度的竞争窗口，并在该竞争窗口范围内随机选择一个随机回退器，当载波空闲时回退计数器的计数数值减1，当载波不空闲时回退计数器的计数数值保持不变，一直循环下去，直到回退计数器的数值减为0节点就可以在该载波上发送信息，category3与category4的区别在于，category3的竞争窗口的长度是固定的。
category2，节点在对载波进行检测时，只要在一个固定时间(如16微秒、25微秒)内检测到载波处于空闲状态就可以直接在该载波上发送信息；
category1，节点不对载波进行侦听就直接在载波上发送信息。
应理解，在上述CCA类型中，category4和category3为带有随机回退的CCA，category2为单时隙CCA。另外，单时隙CCA也不限定于上述category2的CCA，也可以扩展到其他单时隙CCA，比如不需要在固定时间检测25微秒，而是可以在一个时间窗口内多次检测25微秒，只要有一次检测到载波空闲，就可以算作单时隙CCA成功。
130、基站向终端设备发送第一指示信息，第一指示信息用于指示终端设备在第二载波向基站发送上行信息。
可选地，作为一个实施例，基站在接收到上述第一指示信息后，首先对第二载波进行第三CCA，在第三CCA操作成功的情况下，在第一载波向基站发送上行信息。
可选地，终端设备在接收到上述第一指示信息后，在第一MCOT内在第二载波向基站发送上行信息，其中，第一MCOT为基站能占用第一载波的最大连续时长。
应理解，当存在多个第二载波和一个第一载波时，终端设备可以在第一MCOT内在多个第二载波上发送上行信息。
可选地，上述第一MCOT是根据第一CCA的竞争窗口和/或基站进行所述第一CCA时对应的下行业务的等级确定的。
也就是说，第一MCOT与基站在第一载波上所做的带有随机回退的CCA的参数对应，该参数可以包括基站在第一载波上所做的带有随机回退的CCA的竞争窗口值和基站在第一载波上所做的带有随机回退的CCA所对应的下行业务等级中的至少一种。例如，竞争窗口值越大，第一MCOT越 大，业务等级越高，第一MCOT越小。
应理解，终端设备可以在第一MCOT内在第二载波向基站发送上行信息，此时可以理解为基站在第二载波上的第二MCOT可以与第一MCOT相等。也就是说基站做单时隙CCA的多个载波与上述做带有随机回退的CCA的一个载波当前具有共同的MCOT，也就是上述第一MCOT，该多载波共同的第一MCOT是由基站做带有随机回退的CCA的CCA参数确定的。
终端设备既可以在第一MCOT内也可以在第二MCOT内在第二载波向基站发送上行信息。这里的第二MCOT为基站能占用第二载波的最大连续时长。与第一MCOT类似，第二MCOT也可以是根据第一CCA的竞争窗口和/或基站进行所述第二CCA时对应的下行业务的等级确定的。
应理解，终端设备在第一MCOT或者第二MCOT内在第二载波上向基站发送上行信息是指终端设备在第一MCOT或者第二MCOT内除去基站占用的时间之外的剩余时间内发送上行信息。例如，第一MCOT为10ms，基站实际占用第二载波的时间为4ms，那么终端设备可以在剩余的6ms时间内占用第二载波，并在第二载波上向基站发送上行信息，或者，第二MCOT为6ms，基站实际占用第一载波的时间为4ms，那么终端设备可以在剩余的2ms时间占用第二载波，并在第二载波上向基站发送上行信息。一般来说，第一MCOT要大于第二MCOT，这是因为采用第一CCA占用载波的难度相对较大，但是一旦抢占了载波就会分配一个较长的占用时间，而采用第二CCA容易占用载波，占用载波的时间相对较短。因此，当终端设备在第一MCOT内向基站发送上行信息时，终端设备能占用第二载波发送上行信息的时间变长了。因此，本发明实施例中，终端设备既可以在第一MCOT也可以在第二MCOT范围内向基站发送上行信息，提高了终端设备利用第一载波发送上行信息的灵活性。
140、基站在第二载波上接收终端设备发送的上行信息。
本发明实施例中，基站可以将以单时隙CCA占用的载波也共享给终端设备使用，使得终端设备该载波上也能发送上行信息，提高了非授权频谱资源的利用率。
可选地，作为一个实施例，基站向终端设备发送第二指示信息，该第二指示信息用于指示终端设备在发送上行信息之前对第二载波进行的第三CCA的CCA类型，其中，上述第三CCA的类型可以为带有随机回退的CCA 或者单时隙CCA。
应理解，上述第二指示信息可以直接指示CCA的类型，终端设备在接收到该第二指示信息后就可以直接根据第二指示信息指示的CCA类型对第二载波进行评测。终端设备对第二载波进行的第三CCA的类型可以由基站决定，基站可以通过第二指示信息指示终端设备以单时隙CCA直接对第二载波进行评测，这样使得终端设备能够在检测到第二载波空闲时就可以利用第二载波向基站发送上行信息，便于终端设备快速占有第二载波并向基站发送上行信息。而当基站通过第二指示信息指示终端设备以带有随机回退的CCA对第二载波进行评测时，这时终端设备相对来说占用第二载波的难度增大了，只有在带有随机回退的CCA完全操作成功的情况下才能在第二载波上发送上行信息。
可选地，作为一个实施例，第二指示信息中携带第三CCA的间隔信息，该第三CCA的间隔信息用于指示终端设备在发送上行信息之前对第二载波进行的第三CCA的CCA类型。
当终端接收到上述二指示信息后，可以根据第三CCA的CCA间隔，以及CCA间隔与候选CCA类型的对应关系确定第三CCA的CCA类型，其中，候选CCA的类型包括带有随机回退的CCA以及单时隙CCA。
应理解，上述第二指示信息中的第三CCA的CCA间隔信息间接指示了CCA的类型，终端设备在接收到该CCA间隔指示信息后需要先根据该CCA间隔指示信息来确定第三CCA的CCA类型，然后再对第二载波进行第三CCA。例如，第一CCA间隔对应带有随机回退的CCA，第二CCA间隔时对应单时隙CCA。当上述CCA间隔指示信息携带的是第一CCA间隔信息时，终端设备确定第三CCA为带有随机回退的CCA；当上述CCA间隔指示信息携带的是第二CCA间隔信息时，终端设备确定第三CCA为单时隙CCA。
终端设备在第二载波上发送上行信息时，基站是将传输下行信息的传输机会共享给了终端设备，使得终端设备能够用来传输上行信息。使得上行和下行可以共用相同的载波传输信息，提高了载波资源的利用率。
假设基站在第一载波上做category4(允许基站占用第一载波的时间为第二MCOT)，在第二载波上做category2(允许基站占用第二载波的时间为第一MCOT)，基站可以在第二MCOT内将第二载波上发送下行信息的发送机 会共享给终端设备发送上行信息使用，基站还可以在第一MCOT内将在第一载波上发送下行信息的发送机会共享给终端设备发送上行信息。其中，终端设备在第二载波上向基站发送上行信息对第一载波进行LBT的类型包括以下三种情况：
第一种情况，在第一MCOT内，终端设备在第二载波上向基站发送上行信息，也就是说基站不把第二MCOT共享给终端设备，而是将第一MCOT共享给终端设备，使得终端设备在第一MCOT范围内在第一载波上发送上行信息。例如，第一MCOT为8ms，而基站发送下行信息占用了4ms，那么剩下的4ms不仅可以供终端设备在第二载波上传输上行信息时使用category2，也可以供终端设备在第一载波上传输上行信息使用category4，也就是可以实现跨载波共享MCOT。
第二种情况，在第二MCOT内，终端设备在第二载波上向基站发送上行信息。具体地，基站可以确定第二载波上的业务的优先级，然后根据业务的优先级与MCOT值的对应关系(一般来说，每种业务优先级都对应一个MCOT值，例如，业务优先级越高MCOT值往往越小)确定第一载波上的第二MCOT值。如果基站发送下行信息和终端设备发送上行信息总共占用的时间在第二MCOT内，那么终端设备在第二载波上向基站发送上行信息之前，终端设备可以进行category2，否则终端设备需要做category4。
第三种情况，无论是在第一MCOT内或者第二MCOT内，UE只能进行category4。
以上结合图1从基站的角度对本发明实施例的基于非授权频谱的无线通信方法进行了描述，下面结合图2从终端设备的角度对本发明实施例的基于非授权频谱的无线通信方法进行详细的描述。
图2是本发明实施例的基于非授权频谱的无线通信方法的示意性流程图。图2的方法包括：
210、终端设备确定基站在非授权频谱上占用的第一载波和第二载波，其中，基站以第一信道空闲评测CCA占用所述第一载波，以第二CCA占用所述第二载波，所述第一CCA为带有随机回退的CCA，所述第二CCA为单时隙CCA；
220、终端设备接收基站的第一指示信息，该第一指示信息用于指示终端设备在第二载波向基站发送上行信息；
230、所述终端设备根据所述第一指示信息在所述第二载波上向所述基站发送上行信息。
本发明实施例中，基站可以将以单时隙CCA占用的载波也共享给终端设备使用，使得终端设备该载波上也能发送上行信息，提高了非授权频谱资源的利用率。
可选地，作为一个实施例，所述终端设备根据所述第一指示信息在所述第二载波上向所述基站发送上行信息，包括：所述终端设备在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，其中，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
可选地，作为一个实施例，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
可选地，作为一个实施例，所述终端设备在根据所述第一指示信息在所述第二载波向所述基站发送上行信息之前，所述方法还包括：所述终端设备对所述第二载波进行第三CCA；所述终端设备根据所述第一指示信息在所述第一载波向所述基站发送上行信息，包括：在所述第三CCA操作成功的情况下，所述终端设备在所述第一载波向所述基站发送上行信息。
可选地，作为一个实施例，所述终端设备接收所述基站的第二指示信息；所述终端设备根据所述第二指示信息确定所述第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。。
可选地，作为一个实施例，所述第二指示信息包含第三CCA的CCA间隔信息，所述终端设备根据所述第二指示信息确定所述第三CCA的CCA类型，包括：所述终端设备根据所述第三CCA的CCA间隔，以及CCA间隔与候选CCA类型的对应关系确定所述第三CCA的CCA类型，其中，所述候选CCA类型包括带有随机回退的CCA以及单时隙CCA。
以上结合图1和图2分别从基站和终端设备的角度对本发明实施例的基于非授权频谱的无线通信方法进行了详细的描述。事实上，终端设备在共享基站占用的载波发送上行信息时，首先要对载波进行CCA检测。在对载波进行CCA检测时，可以通过判断载波上的信号的能量，当信号能量低于某一门限值时就认为载波处于空闲状态。因此，终端设备在共享基站占用的载波时如何设置CCA检测时的能量检测门限是一个需要考虑的问题。
在现有技术中，如果基站对多个载波进行CCA检测，并且对第一载波 进行检测时采用的是带有随机回退的CCA，并且对第一载波进行检测时的能量检测门限为第一能量检测门限，那么基站在对其余的载波进行CCA检测时的能量检测门限也设置为第一能量检测门限，也就是与对第一载波进行检测时的能量检测门限保持一致。但是这种方式缺乏灵活性，没有综合考虑多个载波的性能，并且没有规定终端设备在发送上行信息之前对载波进行CCA检测的能量门限，因此，需要有一种新的方法来确定终端设备在共享基站占用的载波并发送上行信息之前如何确定对载波进行的CCA的能量检测门限。下面结合图3对本发明实施例的基于非授权频谱的无线通信方法进行详细的描述。
图3是本发明实施例的基于非授权频谱的无线通信方法的示意性流程图。图3的方法包括：
310、终端设备根据非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限；
320、终端设备根据第一载波的能量检测门限对第一载波进行第一CCA，第一CCA为单时隙CCA。
330、终端设备根据多个载波的能量检测门限分别对多个载波进行第二CCA，第二CCA为带有随机回退的CCA。
可选地，上述第一载波和多个载波可以是基站在进行CCA并且CCA成功之后占有的载波，基站将第一载波分享给终端设备使得终端设备能够在第一载波上发送上行信息。
应理解，终端设备在对上述多个载波进行CCA的能量检测门限可以相同也可以不同，例如，共有三个载波，那么对这三个载波分别进行CCA的能量检测门限可以是三个不同的值，也可以是其它的取值。
本发明实施例中，在终端设备发送多载波的上行信息的情况下，终端设备综合多个载波(该多个载波时以带有随机回退的CCA占用的载波)的能量检测门限能够更合理确定单时隙CCA操作的载波的能量检测门限。
可选地，作为一个实施例，终端设备根据第一CCA和第二CCA的操作结果确定是否在第一载波和多个载波上发送上行信息。
当第一CCA和第二CCA均操作成功的情况下，终端设备可以在第一载波和多个载波发送上行信息。当只有第一CCA操作成功时，终端设备可以只在第一载波发送上行信息。
可选地，作为一个实施例，所述终端设备根据所述多个载波中的第二载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第二载波的能量检测门限是所述多个载波的能量检测门限中最小的能量检测门限。
由于以单时隙CCA占用载波的难度大于以带有随机回退的CCA占用载波的难度，而能量检测门限的值越小占用载波的难度就越大，因此考虑到占用载波的公平性，在设置第一载波的能量检测门限时可以参照最小的能量检测门限。
优选地，上述第一载波的能量检测门限小于或者等于所述第二载波的能量检测门限，具体地，第一载波的能量检测门限可以小于第二载波的能量检测门限，并且第二载波的能量检测门限与第一载波的能量检测门限的差值为预设的第一差值。
将第一载波的能量检测门限设置为小于或者等于第二载波的能量检测门限使得终端设备在对第一载波进行CCA操作时的条件更为苛刻，能够更加均衡地考虑各个载波传输上行信息的公平性。
可选地，作为一个实施例，所述终端设备根据所述多个载波中的第三载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第三载波为所述多个载波中索引号最大或者最小的载波。
优选地，上述第一载波能量检测门限小于或者等于所述第三载波的能量检测门限，具体地，第一载波的能量检测门限可以小于第三载波的能量检测门限，并且，第三载波的能量检测门限与第一载波的能量检测门限的差值为预设的第三差值。
可选地，作为一个实施例，所述终端设备将所述多个载波的能量检测门限的平均值确定为第一载波的能量检测门限。
具体地，当多个载波包含10个载波时可以从中任意选取两个载波，将该两个载波的能量检测门限的平均值设置为第一载波的能量检测门限。当然，也可以将其中的3个或3个以上载波的能量检测门限的平均值设置为第一载波的能量检测门限。
可选地，还可以从多个载波中任意选择两个载波，将第一载波的能量检测门限设置在这两个载波的能量检测门限之间。
上文结合图1至图3，详细的描述了根据本发明实施例的基于非授权频谱的无线通信方法，下面将结合图4至图9，描述本发明实施例的基站和终端 设备。
应理解，图4至图9描述的基站、终端设备能够实现图1至图3中的本发明实施例的基于非授权频谱的无线通信方法的各个步骤，为了简洁，适当省略重复的描述。
图4是本发明实施例的基站的示意性结构图。图4的基站400包括：
处理模块410，用于以第一信道空闲评测CCA占用非授权频谱上的第一载波，所述第一CCA为带有随机回退的CCA；
所述处理模块410还用于以第二CCA占用非授权频谱上的第二载波，所述第二CCA为单时隙CCA；
发送模块420，用于向终端设备发送第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；
接收模块430，用于在所述第二载波接收所述终端设备发送的所述上行信息。
本发明实施例中，基站可以将以单时隙CCA占用的载波也共享给终端设备使用，使得终端设备该载波上也能发送上行信息，提高了非授权频谱资源的利用率。
可选地，作为一个实施例，所述第一指示信息具体用于指示所述终端设备在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
可选地，作为一个实施例，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
可选地，作为一个实施例，所述发送模块420还用于向所述终端设备发送第二指示信息，所述第二指示信息用于指示所述终端设备在发送所述上行信息之前对所述第二载波进行的第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
可选地，作为一个实施例，所述第二指示信息携带第三CCA的间隔信息，所述第三CCA的间隔信息用于指示所述第三CCA的CCA类型。
应理解，图4中的基站400能执行图1所示的基于非授权频谱的无线通信方法中由基站执行的各个步骤。
图5是本发明实施例的终端设备的示意性结构图。图5的终端设备500 包括：
确定模块510，用于确定基站在非授权频谱上占用的第一载波和第二载波，其中，所述基站以第一信道空闲评测CCA占用所述第一载波，以第二CCA占用所述第二载波，所述第一CCA为带有随机回退的CCA，所述第二CCA为单时隙CCA；
接收模块520，用于接收所述基站的第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；
发送模块530，用于根据所述第一指示信息在所述第二载波向所述基站发送所述上行信息。
本发明实施例中，基站可以将以单时隙CCA占用的载波也共享给终端设备使用，使得终端设备该载波上也能发送上行信息，提高了非授权频谱资源的利用率。
可选地，作为一个实施例，所述发送模块530具体用于：在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，其中，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
可选地，作为一个实施例，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
可选地，作为一个实施例，所述终端设备还包括：检测模块540，用于对所述第二载波进行第三CCA；所述发送模块530具体用于在所述第三CCA操作成功的情况下，在所述第二载波向所述基站发送上行信息。
可选地，作为一个实施例，所述接收模块520还用于接收所述基站的第二指示信息；所述确定模块510还用于根据所述第二指示信息确定所述第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
可选地，作为一个实施例，所述第二指示信息包含第三CCA的CCA间隔信息，所述确定模块510具体用于根据所述第三CCA的CCA间隔，以及CCA间隔与候选CCA类型的对应关系确定所述第三CCA的CCA类型，其中，所述候选CCA类型包括带有随机回退的CCA以及单时隙CCA。
应理解，图5中的终端设备500能执行图2所示的基于非授权频谱的无线通信方法中由终端设备执行的各个步骤。
图6是本发明实施例的终端设备的示意性结构图。图6的终端设备600 包括：
确定模块610，用于根据非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限；
检测模块620，用于根据所述第一载波的能量检测门限对所述第一载波进行第一CCA，所述第一CCA为单时隙CCA。
所述检测模块620还用于根据所述多个载波的能量检测门限分别对所述多个载波进行第二CCA，所述第二CCA为带有随机回退的CCA。
本发明实施例中，在终端设备发送多载波的上行信息的情况下，终端设备综合多个载波(该多个载波时以带有随机回退的CCA占用的载波)的能量检测门限能够更合理确定单时隙CCA操作的载波的能量检测门限。
可选地，作为一个实施例，所述确定模块610还用于：根据所述第一CCA和所述第二CCA的操作结果确定是否在所述第一载波和所述多个载波上发送上行信息。
可选地，作为一个实施例，所述确定模块610具体用于：根据所述多个载波中的第二载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第二载波的能量检测门限是所述多个载波的能量检测门限中最小的能量检测门限。
可选地，作为一个实施例，所述确定模块610具体用于：确定所述第一载波的能量检测门限小于或者等于所述第二载波的能量检测门限。
可选地，作为一个实施例，所述确定模块610具体用于：根据所述多个载波中的第三载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第三载波为所述多个载波中索引号最大或者最小的载波。
可选地，作为一个实施例，所述确定模块610具体用于：确定所述第一载波的能量检测门限小于或者等于所述第三载波的能量检测门限。
应理解，图6中的终端设备600能执行图3所示的基于非授权频谱的无线通信方法中由终端设备执行的各个步骤。
图7是本发明实施例的基站的示意性结构图。图7的基站700包括：
存储器710，用于存储程序；
处理器720，用于执行所述存储器710中的程序，当所述程序被执行时，所述处理器720用于以第一信道空闲评测CCA占用非授权频谱上的第一载波，所述第一CCA为带有随机回退的CCA；
所述处理器720还用于以第二CCA占用非授权频谱上的第二载波，所述第二CCA为单时隙CCA；
收发器730，用于向终端设备发送第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；
所述收发器730还用于在所述第二载波接收所述终端设备发送的所述上行信息。
本发明实施例中，基站可以将以单时隙CCA占用的载波也共享给终端设备使用，使得终端设备该载波上也能发送上行信息，提高了非授权频谱资源的利用率。
可选地，作为一个实施例，所述第一指示信息具体用于指示所述终端设备在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
可选地，作为一个实施例，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
可选地，作为一个实施例，所述处理器720还用于向所述终端设备发送第二指示信息，所述第二指示信息用于指示所述终端设备在发送所述上行信息之前对所述第二载波进行的第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
可选地，作为一个实施例，所述第二指示信息携带第三CCA的间隔信息，所述第三CCA的间隔信息用于指示所述第三CCA的CCA类型。
应理解，图7中的基站700能执行图1所示的基于非授权频谱的无线通信方法中由基站执行的各个步骤。
图8是本发明实施例的终端设备的示意性结构图。图8的终端设备800包括：
存储器810，用于存储程序；
处理器820，用于执行所述存储器810中的程序，当所述程序被执行时，所述处理器820用于确定基站在非授权频谱上占用的第一载波和第二载波，其中，所述基站以第一信道空闲评测CCA占用所述第一载波，以第二CCA占用所述第二载波，所述第一CCA为带有随机回退的CCA，所述第二CCA为单时隙CCA；
收发器830，用于接收所述基站的第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；
所述收发器830还用于根据所述第一指示信息在所述第二载波向所述基站发送所述上行信息。
本发明实施例中，基站可以将以单时隙CCA占用的载波也共享给终端设备使用，使得终端设备该载波上也能发送上行信息，提高了非授权频谱资源的利用率。
可选地，作为一个实施例，所述收发器830具体用于：在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，其中，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
可选地，作为一个实施例，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
可选地，作为一个实施例，所述处理器820用于对所述第二载波进行第三CCA；所述收发器830具体用于在所述第三CCA操作成功的情况下，在所述第二载波向所述基站发送上行信息。
可选地，作为一个实施例，所述收发器830还用于接收所述基站的第二指示信息；所述处理器820还用于根据所述第二指示信息确定所述第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
可选地，作为一个实施例，所述第二指示信息包含第三CCA的CCA间隔信息，所述处理器820具体用于根据所述第三CCA的CCA间隔，以及CCA间隔与候选CCA类型的对应关系确定所述第三CCA的CCA类型，其中，所述候选CCA类型包括带有随机回退的CCA以及单时隙CCA。
应理解，图8中的终端设备800能执行图2所示的基于非授权频谱的无线通信方法中由终端设备执行的各个步骤。
图9是本发明实施例的终端设备的示意性结构图。图9的终端设备900包括：
存储器910，用于存储程序；
处理器920，用于执行所述存储器910中的程序，当所述程序被执行时，所述处理器920用于根据非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限；
所述处理器920还用于根据所述第一载波的能量检测门限对所述第一载波进行第一CCA，所述第一CCA为单时隙CCA。
所述处理器920还用于根据所述多个载波的能量检测门限分别对所述多个载波进行第二CCA，所述第二CCA为带有随机回退的CCA。
本发明实施例中，在终端设备发送多载波的上行信息的情况下，终端设备综合多个载波(该多个载波时以带有随机回退的CCA占用的载波)的能量检测门限能够更合理确定单时隙CCA操作的载波的能量检测门限。
可选地，作为一个实施例，所述处理器920还用于：根据所述第一CCA和所述第二CCA的操作结果确定是否在所述第一载波和所述多个载波上发送上行信息。
可选地，作为一个实施例，所述处理器920具体用于：根据所述多个载波中的第二载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第二载波的能量检测门限是所述多个载波的能量检测门限中最小的能量检测门限。
可选地，作为一个实施例，所述处理器920具体用于：确定所述第一载波的能量检测门限小于或者等于所述第二载波的能量检测门限。
可选地，作为一个实施例，所述处理器920具体用于：根据所述多个载波中的第三载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第三载波为所述多个载波中索引号最大或者最小的载波。
可选地，作为一个实施例，所述处理器920具体用于：确定所述第一载波的能量检测门限小于或者等于所述第三载波的能量检测门限。
应理解，图9中的终端设备900能执行图3所示的基于非授权频谱的无线通信方法中由终端设备执行的各个步骤。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (34)

  1. 一种基于非授权频谱的无线通信方法，其特征在于，包括：
    基站以第一信道空闲评测CCA占用非授权频谱上的第一载波，所述第一CCA为带有随机回退的CCA；
    所述基站以第二CCA占用非授权频谱上的第二载波，所述第二CCA为单时隙CCA；
    所述基站向终端设备发送第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；
    所述基站在所述第二载波接收所述终端设备发送的所述上行信息。
  2. 如权利要求1所述的方法，其特征在于，所述第一指示信息具体用于指示所述终端设备在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
  3. 如权利要求2所述的方法，其特征在于，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
  4. 如权利要求1-3中任一项所述的方法，其特征在于，所述方法还包括：
    所述基站向所述终端设备发送第二指示信息，所述第二指示信息用于指示所述终端设备在发送所述上行信息之前对所述第二载波进行的第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
  5. 如权利要求4所述的方法，其特征在于，所述第二指示信息携带第三CCA的间隔信息，所述第三CCA的间隔信息用于指示所述第三CCA的CCA类型。
  6. 一种基于非授权频谱的无线通信方法，其特征在于，包括：
    终端设备确定基站在非授权频谱上占用的第一载波和第二载波，其中，所述基站以第一信道空闲评测CCA占用所述第一载波，以第二CCA占用所述第二载波，所述第一CCA为带有随机回退的CCA，所述第二CCA为单时隙CCA；
    所述终端设备接收所述基站的第一指示信息，所述第一指示信息用于指 示所述终端设备在所述第二载波向所述基站发送上行信息；
    所述终端设备根据所述第一指示信息在所述第二载波向所述基站发送所述上行信息。
  7. 如权利要求6所述的方法，其特征在于，所述终端设备根据所述第一指示信息在所述第二载波向所述基站发送上行信息，包括：
    所述终端设备在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，其中，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
  8. 如权利要求7所述的方法，其特征在于，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
  9. 如权利要求6-8中任一项所述的方法，其特征在于，所述终端设备在根据所述第一指示信息在所述第二载波向所述基站发送上行信息之前，所述方法还包括：
    所述终端设备对所述第二载波进行第三CCA；
    所述终端设备根据所述第一指示信息在所述第一载波向所述基站发送上行信息，包括：
    在所述第三CCA操作成功的情况下，所述终端设备在所述第一载波向所述基站发送上行信息。
  10. 如权利要求6-9中任一项所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收所述基站的第二指示信息；
    所述终端设备根据所述第二指示信息确定所述第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
  11. 如权利要求10所述的方法，其特征在于，所述第二指示信息包含第三CCA的CCA间隔信息，所述终端设备根据所述第二指示信息确定所述第三CCA的CCA类型，包括：
    所述终端设备根据所述第三CCA的CCA间隔，以及CCA间隔与候选CCA类型的对应关系确定所述第三CCA的CCA类型，其中，所述候选CCA类型包括带有随机回退的CCA以及单时隙CCA。
  12. 一种基于非授权频谱的无线通信方法，其特征在于，包括：
    终端设备根据非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限；
    所述终端设备根据所述第一载波的能量检测门限对所述第一载波进行第一CCA，所述第一CCA为单时隙CCA；
    所述终端设备根据所述多个载波的能量检测门限分别对所述多个载波进行第二CCA，所述第二CCA为带有随机回退的CCA。
  13. 如权利要求12所述的方法，其特征在于，所述方法还包括：
    所述终端设备根据所述第一CCA和所述第二CCA的操作结果确定是否在所述第一载波和所述多个载波上发送上行信息。
  14. 如权利要求12或13所述的方法，其特征在于，所述终端设备根据所述非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限，包括：
    所述终端设备根据所述多个载波中的第二载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第二载波的能量检测门限是所述多个载波的能量检测门限中最小的能量检测门限。
  15. 如权利要求14所述的方法，其特征在于，所述终端设备根据所述多个载波中的第二载波的能量检测门限确定所述第一载波的能量检测门限，包括：
    所述终端设备确定所述第一载波的能量检测门限小于或者等于所述第二载波的能量检测门限。
  16. 如权利要求12或13所述的方法，其特征在于，所述终端设备根据所述非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限，包括：
    所述终端设备根据所述多个载波中的第三载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第三载波为所述多个载波中索引号最大或者最小的载波。
  17. 如权利要求16所述的方法，其特征在于，所述终端设备根据所述多个载波中的第三载波的能量检测门限确定所述第一载波的能量检测门限，包括：
    所述终端设备确定所述第一载波的能量检测门限小于或者等于所述第三载波的能量检测门限。
  18. 一种基站，其特征在于，包括：
    处理模块，用于以第一信道空闲评测CCA占用非授权频谱上的第一载波，所述第一CCA为带有随机回退的CCA；
    所述处理模块还用于以第二CCA占用非授权频谱上的第二载波，所述第二CCA为单时隙CCA；
    发送模块，用于向终端设备发送第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；
    接收模块，用于在所述第二载波接收所述终端设备发送的所述上行信息。
  19. 如权利要求18所述的基站，其特征在于，所述第一指示信息具体用于指示所述终端设备在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
  20. 如权利要求19所述的基站，其特征在于，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
  21. 如权利要求18-20中任一项所述的基站，其特征在于，所述发送模块还用于向所述终端设备发送第二指示信息，所述第二指示信息用于指示所述终端设备在发送所述上行信息之前对所述第二载波进行的第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
  22. 如权利要求21所述的基站，其特征在于，所述第二指示信息携带第三CCA的间隔信息，所述第三CCA的间隔信息用于指示所述第三CCA的CCA类型。
  23. 一种终端设备，其特征在于，包括：
    确定模块，用于确定基站在非授权频谱上占用的第一载波和第二载波，其中，所述基站以第一信道空闲评测CCA占用所述第一载波，以第二CCA占用所述第二载波，所述第一CCA为带有随机回退的CCA，所述第二CCA为单时隙CCA；
    接收模块，用于接收所述基站的第一指示信息，所述第一指示信息用于指示所述终端设备在所述第二载波向所述基站发送上行信息；
    发送模块，用于根据所述第一指示信息在所述第二载波向所述基站发送所述上行信息。
  24. 如权利要求23所述的终端设备，其特征在于，所述发送模块具体用于：
    在第一最大载波占用时间MCOT内在所述第二载波向所述基站发送所述上行信息，其中，所述第一MCOT为所述基站能占用所述第一载波的最大连续时长。
  25. 如权利要求24所述的终端设备，其特征在于，所述第一MCOT是根据所述第一CCA的竞争窗口和/或所述基站进行所述第一CCA时对应的下行业务的等级确定的。
  26. 如权利要求23-25中任一项所述的终端设备，其特征在于，所述终端设备还包括：
    检测模块，用于对所述第二载波进行第三CCA；
    所述发送模块具体用于在所述第三CCA操作成功的情况下，在所述第一载波向所述基站发送上行信息。
  27. 如权利要求23-26中任一项所述的终端设备，其特征在于，所述接收模块还用于接收所述基站的第二指示信息；
    所述确定模块还用于根据所述第二指示信息确定所述第三CCA的CCA类型，所述第三CCA的CCA类型为带有随机回退的CCA或者单时隙CCA。
  28. 如权利要求27所述的终端设备，其特征在于，所述第二指示信息包含第三CCA的CCA间隔信息，所述确定模块具体用于根据所述第三CCA的CCA间隔，以及CCA间隔与候选CCA类型的对应关系确定所述第三CCA的CCA类型，其中，所述候选CCA类型包括带有随机回退的CCA以及单时隙CCA。
  29. 一种终端设备，其特征在于，包括：
    确定模块，用于根据非授权频谱上的多个载波的能量检测门限确定非授权频谱上的第一载波的能量检测门限；
    检测模块，用于根据所述第一载波的能量检测门限对所述第一载波进行第一CCA，所述第一CCA为单时隙CCA；
    所述检测模块还用于根据所述多个载波的能量检测门限分别对所述多个载波进行第二CCA，所述第二CCA为带有随机回退的CCA。
  30. 如权利要求29所述的终端设备，其特征在于，所述确定模块还用于：
    根据所述第一CCA和所述第二CCA的操作结果确定是否在所述第一载波和所述多个载波上发送上行信息。
  31. 如权利要求29或30所述的终端设备，其特征在于，所述确定模块具体用于：
    根据所述多个载波中的第二载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第二载波的能量检测门限是所述多个载波的能量检测门限中最小的能量检测门限。
  32. 如权利要求31所述的终端设备，其特征在于，所述确定模块具体用于：
    确定所述第一载波的能量检测门限小于或者等于所述第二载波的能量检测门限。
  33. 如权利要求29或30所述的终端设备，其特征在于，所述确定模块具体用于：
    根据所述多个载波中的第三载波的能量检测门限确定所述第一载波的能量检测门限，其中，所述第三载波为所述多个载波中索引号最大或者最小的载波。
  34. 如权利要求33所述的终端设备，其特征在于，所述确定模块具体用于：
    确定所述第一载波的能量检测门限小于或者等于所述第三载波的能量检测门限。
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